V•IChipApplicationNotes
AN:001—ConfiguringtheVicorBCMwithlowpowerniPOLs»
TheniPOLswithinIBAforegoisolationandhighratiovoltagetransformationinordertoimprovecosteffectiveness,andtheydependuponanearbybusconvertertosupplyisolatedpoweratalowvoltage.The48Vto12V(K=1/4)BCMcanbeplacedatthepowerentrypointontheboard.Thiswillprovidesafetyisolationfromthehigher48Vbackplanevoltageaswellasfreeupboardspaceatthepointofload.
AN:002—PRM/VTMParallelOperation»
ThisapplicationsnotedescribesthestepsneededtocreateacurrentsharinghigherpowerarrayusingtwoPRM-ALandVTMpairsinaparallelconfiguration.IftheapplicationrequiresmorethantwoPRMsinparallel,pleasecontactApplicationsEngineeringforadditionalinformation.
AN:003—PoweringMultipleVTMswithaSinglePRM»
ThisApplicationsNotediscussesthedesignpracticesforusingVicorsV•IChipPre-RegulatorModuleandVoltageTransformationModuletomeetthechallengeofpowersystemsthatrequirelowervoltages,morecurrent,andmultiplevoltageswithinonesystem.VicorsV•IChipscanaddressthesechallenges.
AN:005—FPAPrintedCircuitBoardLayoutGuidelines»
FactorizedPowerwithV•IChipsenablesystemdensitytokeeppacewithtechnologybyprovidinglayoutflexibilityandhighpowerdensity.Moreimportantly,V•IChipsallowapowerconversionsystemtobefactorizedorseparatedintoitsconstituentfunctions.
AN:006—AFilterSolutionfortheBCM»
TheBusConverterModule(BCM)isamemberofVicorsFactorizedPowerArchitecturefamilyofV•IChips.Itprovidesanisolatedintermediatebusvoltagetopowernon-isolatedpoint-of-load(POL)convertersfromanarrowinputrangeDCsource.
AN:007—UsingVTMsas26–55VInputBusConverters»
TheVoltageTransformationModule(VTM)isafundamentalbuildingblockofFactorizedPowerArchitecture(FPA).ThisnewpowerconversionarchitectureseparatesthefunctionsoftheDC-DCconverter—regulation,isolation,andtransformation—intotwobuildingblocks.
AN:008—V•IChipBCMBusConverterThermalManagement»
ThepurposeofthisApplicationsNoteistodeterminethepowercapabilityoftheBCMsgivencertainambienttemperatureandairflowconditionsplusheatsinkoptions.
AN:009—V•IChipSolderingRecommendations»
V•IChipsareintendedforreflowsolderingassembly.TheinformationcontainedinthisdocumentdefinestheprocessingconditionsrequiredforsuccessfulattachmenttoaPCB.Failuretofollowtherecommendationsprovidedcanresultinaestheticandfunctionalfailureofthemodule.
AN:016—UsingBCM™BusConvertersinHighPowerArrays»
ThisapplicationnoteprovidesmethodsandguidelinesfordesigningBCMsintohighpowerarrays.
AN:017—RoHS-CompliantThrough-HoleV•IChipSolderingRecommendations»
RoHScompliant,through-holefullsizeV•IChipsareintendedforwavesolderingassembly.TheinformationcontainedinthisdocumentdefinestheprocessingconditionsrequiredformountingafullsizeV•IChiptothePCBusingwavesolderingorhandsoldering.
AN:018—ProvidingaConstantCurrentforPoweringLEDsusingthePRMandVTM»
LightEmittingDiodes(LEDs)requireaconstantcurrentforproperoperation.InordertousethePRMandVTMtopoweranLED,itisnecessarytomodifytheoperationofthePRMtoprovidearegulatedcurrent.Thisapplicationnoteprovidesguidelinesforimplementingthatconstantcurrentsourceusingthechipset.
AN:022—MILEMIandTransientSolutions»
28VoltdefenseapplicationsmustmeetanumberofnoiseandpowerrelatedstandardssuchasMIL-STD-461,MIL-STD-704,andMIL-STD-1275.
AN:024—AccuratePoint-of-LoadVoltageRegulationUsingSimpleAdaptiveLoopFeedback»
ThisapplicationnoteexplainstheadaptiveloopregulationconceptandthedesignproceduretoachievegoodvoltageregulationforasimplePRM/VTMcombination.